Fondo "Giorgio e Gabriella Nebbia" - Sezione "Energia Solare"
29.77 The Sun: Prophets study rays for far-off needs, (Life, 8 feb.1954). Solar reflector, a small machine designed by Dr. Charles Abbot of Smithsonian Institution, can collect sun's rays, focus them on a tiny black tube (center) to boil some water. Large reflectors for power are now prohibitively costly.